Deep Tide TechFlow News: On April 5th, according to PRNewswire, Nasdaq-listed company MicroCloud Hologram announced a $400 million investment to upgrade the Bitcoin protocol to resist quantum attacks. The company plans to develop a quantum-resistant protocol based on a multi-layer hybrid encryption architecture on top of the existing Bitcoin transaction structure, introducing a parallel verification mechanism to validate post-quantum signature algorithms alongside traditional signature algorithms. Under this framework, users can choose to use both ECDSA and quantum-resistant signature algorithms for dual signatures, achieving security redundancy before the full emergence of quantum threats. It is reported that this hybrid signature strategy not only enhances the system's resistance to attacks but also provides ample transition time for network upgrades, avoiding systemic risks associated with one-time replacements.